What is the speed of a wave with a wavelength of 10 mm and a frequency of 5.0 hz?
a. 2 mm/s...
Physics, 06.10.2019 14:50 KingSavage278
What is the speed of a wave with a wavelength of 10 mm and a frequency of 5.0 hz?
a. 2 mm/s
b. 0.5 mm/s
c. 15 mm/s
d. 50 mm/s
Answers: 2
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The diagram shows a series of volcanic island and a hot spot determine the direction of movement of the tectonic plate that for the island
Answers: 1
Physics, 22.06.2019 13:10
The bar of prob. 5/82 is repeated here. the ends of the 0.4-m bar remain in contact with their re- spective support surfaces. end b has a velocity of 0.5 m/s and an acceleration of 0.3 m/s2 in the di- rections shown. determine the angular accelera- tion of the bar and the acceleration of end a.
Answers: 3
Physics, 22.06.2019 19:50
The heater element of a 120 v toaster is a 5.4 m length of nichrome wire, whose diameter is 0.48 mm. the resistivity of nichrome at the operating temperature of the toaster is 1.3 × 10-6 ω·m. the toaster is operated at a voltage of 120 v. (a) what is the power drawn by the toaster? (b) if the cost of electricity is 12 ¢ per kilowatt-hour, and it takes 2 minutes to toast bread, how much does it cost for toasted bread? (c) when the heater element is at room temperature, is the resistivity in the nichrome wire greater than, less than, or equal to it’s resistivity when at operating temperature? explain.
Answers: 3
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